Subject
taro, aroids, high pressure liquid chromatography, diversity, carotenoid, UPLC-ESI-Q-TOF, Phenolic compound, food analysis, food composition, araceae, colocasia esculenta, diversité, carotenoide, analyse alimentaire, hplc, chemotype, [SDV.IDA]Life Sciences [q-bio]/Food engineering

Domains
Agriculture, Biologie, Sciences du vivant, Sciences exactes, Agronomie

Description

Taro, Colocasia esculenta (L.) Schott, is one of the oldest major staple food crops of tropical regions. This study represents one the first in-depth surveys of taro biodiversity based on corms flesh secondary metabolites fingerprints. Out of the 167 analyzed cultivars, 70 UV-absorbing substances were annotated according to their retention time, UV/vis absorption spectrum, high resolution mass (by HRMS) and fragmentation pattern (tandem MS-MS). They included 6 carotenoids, 35 flavones/flavonols, 6 flavanones, 2 flavanols and 1 indol. Twenty flavones that were glycosylated forms of apigenin, luteolin and chrysoeriol conferred to the corms a yellow color and defined a low abundance (ca. 10% of cultivars) chemotype. Their accumulation negatively correlated with flavanones which were annotated for the first time in taro. Orange flesh corms were characterized-by high levels of beta-carotene. Secondary metabolite based chemotypes displayed no geographical distribution pattern.

Keywords

Language
English (en-GB)

Creators
Munoz, Ismaël, Malapa, Roger, Michalet, Serge, Lebot, Vincent, Legendre, Laurent

Contributors
Laboratoire d'Ecologie Microbienne - UMR 5557 (LEM) ; Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon-Ecole Nationale Vétérinaire de Lyon (ENVL)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Vanuatu Agricultural Research and Training Centre (VARTC), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), French national agency for research funding 'Agence Nationale pour la Recherche' ANR-2010-STRA-007

Sources
ISSN: 0889-1575, EISSN: 1096-0481, Journal of Food Composition and Analysis, https://hal.science/hal-01601664, Journal of Food Composition and Analysis, 2016, 52, pp.24-32. ⟨10.1016/j.jfca.2016.07.004⟩, http://www.sciencedirect.com/science/journal/08891575

Relation
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jfca.2016.07.004

Coverage
Vanuatu

Name of newspaper